Many tablet input drivers use BTN_STYLUS2 code to report a second tablet stylus button. Yet, the generic HID input driver doesn't map it. Apparently, because there is no corresponding usage in the HID Usage Tables. This patch selects a compromise usage - "Tablet Pick" (0x46) to be mapped to BTN_STYLUS2. Some tablets use "Eraser" usage, but mapping it to a button wouldn't be entirely correct, because the specification says it may be "a pressure quantity". Signed-off-by: Nikolai Kondrashov <spbnick@xxxxxxxxx> --- drivers/hid/hid-input.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 6c03dcc..0c2908f 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -336,6 +336,10 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel map_key_clear(BTN_STYLUS); break; + case 0x46: /* TabletPick */ + map_key_clear(BTN_STYLUS2); + break; + default: goto unknown; } break; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
